<template>
	<view>
		<view class="bg-white p-2" style="width: 2000rpx;border: 2rpx solid #eee;">
			<view class="flex chat">
				<view class="flex flex-column a" style="height: 1200rpx; overflow-y: scroll;">
					<view @click="handle(i)" v-for="(item,i) in UserId" :key="item.UserId"
						class="flex justify-between align-center p-4 px-8" style="border: 2rpx solid #eee;"
						:style="item.isShow?'background-color: #ff8929;color:#eee;':''">
						<image style="width: 100rpx;" src="/static/3.png" mode="widthFix"></image>
						<view class="" style="width: 60%;">
							<view class="font-weight-bold text-ellipsis">{{item.Nick!=''?item.Nick:item.UserId}}</view>
							<view :title="item.Enterprise_Name" class="font-small text-ellipsis"
								v-if="item.Authentication=='1'">{{item.Enterprise_Name}}</view>
							<view class="font-small">
								{{item.Authentication==''?'未认证':item.Authentication=='1'?'企业商户':'个体商户'}}</view>
						</view>
						<view class="bg-danger text-white text-center"
							style="border-radius: 50%;width: 40rpx;height: 40rpx;line-height: 40rpx;">
							1
						</view>
					</view>
				</view>
				<!-- 右 -->
				<view v-if="item.isShow" v-for="(item,i) in UserId" :key="item.UserId"
					class="bg-light flex-1 flex flex-column " id="scrollview" style="height: 1200rpx;">
					<!-- 聊天消息区 -->
					<scroll-view :scroll-top="scrollTop" :style="{height:scrollViewHeight+'rpx'}" :scroll-y="true"  id="msglistview" class=" bg-light scroll-view a"
						style="height: 90%;border: 2rpx solid #eee;overflow-y: scroll;w">
						<view class="chat-body">
							<!-- 聊天记录 -->
							<view v-for="(item_,index) in item.msgList" :key="index">
								<!-- 自己发的消息 -->
								<view class="item self" v-if="item_.userContent != ''">
									<!-- 文字内容 -->
									<view class="content right">
										{{item_.userContent}}
									</view>
									<!-- 头像 -->
									<view class="flex flex-column align-center">
										<text class="font-small">{{item_.time}}</text>
										<image mode="widthFix" style="width: 70rpx;" class="avatar" src="/static/1.png">
										</image>
									</view>
								</view>
								<!-- 机器人发的消息 -->
								<view class="item Ai" v-if="item_.botContent != ''">
									<!-- 头像 -->
									<view class="flex flex-column align-center">
										<text class="font-small">{{item_.time}}</text>
										<image mode="widthFix" style="width: 70rpx;" class="avatar" src="/static/1.png">
										</image>
									</view>
									<!-- 文字内容 -->
									<view class="content left">
										{{item_.botContent}}
									</view>
								</view>
							</view>
						</view>
					</scroll-view>
					<!-- 发送消息区 -->
					<view class="p-4">
						<view class="flex justify-between w-100">
							<view class="send-msg a" style="width: 80%; height: 100rpx; overflow-y: scroll;">
								<textarea style="width: 100%;" v-model="item.chatMsg" maxlength="300"
									confirm-type="send" @confirm="handleSend(i)" placeholder="快来聊天吧~"
									:show-confirm-bar="false" :adjust-position="false" @linechange="sendHeight"
									@focus="focus" @blur="blur" auto-height></textarea>
							</view>
							<view class="flex-1">
								<button @click="handleSend(i,item)" style="height: 100%;background-color: burlywood;"
									class="flex justify-center align-center" type="default">发送</button>
							</view>
						</view>
					</view>
				</view>
			</view>
		</view>
		<Notify :type="type" :content="message" :show="show"></Notify>
	</view>
</template>

<script>
	import times from '@/mixins/time.js'
	import Notify from '@/components/Notify/Notify.vue'
	const app = getApp()
	export default {
		name: "Tradingchat",
		data() {
			return {
				usePhone: "",
				height: "",
				type: "info",
				height: 20,
				scrollTop:20,
				scrollViewHeight:1200,
				show: false,
				message: '',
				socketTask: null,
				Enterprise_Info_SerialNumber: "",
				is_open_socket: false, // 确保websocket是打开状态
				hearBeatInterval: null, //心跳
				//键盘高度
				keyboardHeight: 0,
				//底部消息发送高度
				bottomHeight: 0,
				//滚动距离
				scrollTop: 0,
				userId: '',
				//发送的消息
				chatMsg: "",
				UserId: [
					// 	{
					// 	UserId:'12313131321',
					// 	Nick:'',
					// 	chatMsg:'',
					// 	isShow:true,
					// 	msgList:[{
					// 		botContent: "当前用户已打开客服通讯(自动)",
					// 		userContent: "",
					// 		time:''
					// 	}]
					// },
				]
			}
		},
		// updated() {
		// 	//页面更新时调用聊天消息定位到最底部
		// 	this.scrollToBottom();
		// },
		computed: {

		},
		components: {
			Notify
		},
		onLoad() {
			this.Enterprise_Info_SerialNumber = uni.getStorageSync('enterprise')
			this.usePhone = uni.getStorageSync('use')
			this.connectSocketInit()
			console.log(this.Enterprise_Info_SerialNumber)
			console.log(this.usePhone)
			// uni.onKeyboardHeightChange(res => {
			// 	this.keyboardHeight = this.rpxTopx(res.height)
			// 	if (this.keyboardHeight < 0) this.keyboardHeight = 0;
			// })
		},
		onShow() {

		},
		// onHide() {
		// 	this.closeSocket()
		// },
		mounted() {
			this.Enterprise_Info_SerialNumber = uni.getStorageSync('enterprise')
			this.usePhone = uni.getStorageSync('use')
			this.connectSocketInit()
			console.log(this.Enterprise_Info_SerialNumber)
			this.GetList()
			this.scrollTop = 1200
		},
		beforeDestroy() {
			this.closeSocket()
		},
		unmounted() {
			this.closeSocket()
		},
		methods: {
			focus() {
				console.log(this.Enterprise_Info_SerialNumber)
				this.scrollToBottom()
			},
			
			blur() {
				this.scrollToBottom()
			},
			// px转换成rpx
			rpxTopx(px) {
				let deviceWidth = uni.getSystemInfoSync().windowWidth
				let rpx = (750 / deviceWidth) * Number(px)
				return Math.floor(rpx)
			},
			// 监视聊天发送栏高度
			sendHeight() {
				setTimeout(() => {
					let query = uni.createSelectorQuery();
					query.select('.send-msg').boundingClientRect()
					query.exec(res => {
						this.bottomHeight = this.rpxTopx(res[0].height)
					})
				}, 10)
			},
			// 滚动至聊天底部
			scrollToBottom() {
				this.$nextTick(() => {
					uni.createSelectorQuery().in(this).select('#msglistview').boundingClientRect((res) => {
						let top = this.scrollViewHeight + res.height;
						if (top > 0) {
							this.scrollTop = top;
						}
						console.log(res)
					}).exec()
				})
			},
			handle(i) {
				this.UserId.forEach(item => {
					item.isShow = false
				})
				this.UserId[i].isShow = true
			},
			// 发送消息
			handleSend(i, item) {
				this.scrollToBottom()
				if (item.chatMsg.trim() == '') {
					this.type = 'error'
					this.message = '不可以输入空内容'
					this.show = true
					setTimeout(() => {
						this.show = false
					}, 2000)
				}
				//如果消息不为空
				if (!this.UserId[i].chatMsg || !/^\s+$/.test(this.UserId[i].chatMsg)) {
					let time = times.nowtime();
					this.UserId[i].msgList.push({
						botContent: "",
						userContent: this.UserId[i].chatMsg,
						time
					});
					if (this.is_open_socket && this.UserId[i].chatMsg != "") {
						this.socketTask.send({
							data: JSON.stringify({
								time,
								message: this.UserId[i].chatMsg,
								userId: this.UserId[i].UserId,
							}),
							async success() {
								console.log("消息发送成功");
							},
						});
						this.setMessage(this.UserId[i].UserId, this.UserId[i].chatMsg, time)
					}
					this.UserId[i].chatMsg = ''
				}
			},
			connectSocketInit() {
				// 创建一个this.socketTask对象【发送、接收、关闭socket都由这个对象操作】
				this.socketTask = uni.connectSocket({
					url: "wss" + (app.globalData.Domain_Name).slice(5) + "/websocket?userId=Group" + this
						.Enterprise_Info_SerialNumber,
					success(data) {
						console.log("websocket连接成功");
					},
				});
				// // 消息的发送和接收必须在正常连接打开中,才能发送或接收【否则会失败】
				this.socketTask.onOpen((res) => {
					console.log("WebSocket连接正常打开中...！");
					this.is_open_socket = true;
					// 注：只有连接正常打开中 ，才能正常成功发送消息
					this.hearBeatInterval = setInterval(() => {
						this.socketTask.send({
							data: 'ping',
						});
					}, 5000)
					// 注：只有连接正常打开中 ，才能正常收到消息
					this.socketTask.onMessage((res) => {
						console.log(JSON.parse(res.data))
						let message = JSON.parse(res.data).data.message
						let time = JSON.parse(res.data).data.time
						let UserId = JSON.parse(res.data).userId.replace('Group', '')

						if (this.isArrNull(UserId, this.UserId)) {
							if (this.UserId.length == 0) {
								this.UserId.push({
									UserId,
									Nick: '',
									Enterprise_Name: '',
									Authentication: '',
									chatMsg: '',
									isShow: true,
									msgList: []
								})
							} else {
								this.UserId.push({
									UserId,
									Nick: '',
									Enterprise_Name: '',
									Authentication: '',
									chatMsg: '',
									isShow: false,
									msgList: []
								})
							}
							this.getMember(UserId)
						}
						this.UserId.forEach(item => {
							if (item.UserId == UserId) {
								item.msgList.push({
									botContent: message,
									userContent: "",
									time
								})
							}
						})
					});
				})
				// // 这里仅是事件监听【如果socket关闭了会执行】
				this.socketTask.onClose(() => {
					this.is_open_socket = false;
					clearInterval(this.hearBeatInterval)
					console.log("已经被关闭了")
				})
			},
			// 关闭websocket【离开这个页面的时候执行关闭】
			closeSocket() {
				if (this.is_open_socket) {
					this.socketTask.close()
					clearInterval(this.hearBeatInterval)
				}
			},
			clickRequest() {
				if (this.is_open_socket) {
					// websocket的服务器的原理是:发送一次消息,同时返回一组数据【否则服务器会进去死循环崩溃】
					this.socketTask.send({
						data: "请求一次发送一次message",
						async success() {
							console.log("消息发送成功");
						},
					});
				}
			},
			GetList() {
				uni.request({ //
					url: app.globalData.Domain_Name + '/GroupServesHistory',
					header: {
						'Content-Type': 'application/x-www-form-urlencoded'
					},
					method: "POST",
					data: {
						Group_ID: this.Enterprise_Info_SerialNumber,
						User_Type: 'service',
						Enterprise_Info_SerialNumber: this.Enterprise_Info_SerialNumber,
					},
					success: (res) => {
						console.log(res.data);
						this.UserId = res.data.Data
					}
				})
			},
			getMember(User_Number) {
				uni.request({
					url: app.globalData.Domain_Name + '/getUserInfo',
					header: {
						'Content-Type': 'application/x-www-form-urlencoded'
					},
					method: "POST",
					data: {
						User_Number,
					},
					success: (res) => {
						console.log(res.data.Data[0]);
						this.UserId.forEach(item => {
							if (item.UserId == User_Number && res.data.Data.length == 1) {
								item.Nick = res.data.Data[0].ID_Name
								item.Enterprise_Name = res.data.Data[0].Enterprise_Name
								item.Authentication = res.data.Data[0].Authentication
							}
						})
					}
				})
			},
			setMessage(Group_User_Number, Group_Message, Group_Message_Time) { //保存消息到历史记录
				uni.request({
					url: app.globalData.Domain_Name + '/GoodsFileAdd',
					header: {
						'Content-Type': 'application/x-www-form-urlencoded'
					},
					method: "POST",
					data: {
						Data: JSON.stringify({
							group_serves_news: [{
								Group_Serves_SerialNumber: '',
								Group_User_Number,
								Group_Serves_ID: this.Enterprise_Info_SerialNumber,
								Group_Message,
								Group_Message_Time,
								Group_Message_Type: '',
								Enterprise_Info_SerialNumber: this.Enterprise_Info_SerialNumber,
								Row_Status: '1'
							}]
						}),
					},
					success: (res) => {
						console.log('已保存到历史记录');
					}
				})
			},
			isArrNull(index, arr) {
				let num = 0;
				arr.forEach(item => {
					if (item.UserId == index) {
						num++
					}
				})
				if (num == 0) {
					return true
				} else {
					return false
				}
			}
		}
	}
</script>

<style lang="scss">
	$chatContentbgc: #C2DCFF;
	$sendBtnbgc: #4F7DF5;

	.chat {
		.topTabbar {
			width: 100%;
			height: 90rpx;
			line-height: 90rpx;
			display: flex;
			margin-top: 80rpx;
			justify-content: space-between;

			.icon {
				margin-left: 20rpx;
			}

			.text {
				margin: auto;
				font-size: 16px;
				font-weight: 700;
			}

			.button {
				width: 10%;
				margin: auto 20rpx auto 0rpx;
			}
		}

		.scroll-view {
			::-webkit-scrollbar {
				display: none;
				width: 0 !important;
				height: 0 !important;
				-webkit-appearance: none;
				background: transparent;
				color: transparent;
			}

			// background-color: orange;
			background-color: #F6F6F6;

			.chat-body {
				display: flex;
				flex-direction: column;
				padding-top: 23rpx;

				// background-color:skyblue;
				.self {
					justify-content: flex-end;
				}

				.item {
					display: flex;
					padding: 23rpx 30rpx;
					// background-color: greenyellow;

					.right {
						background-color: $chatContentbgc;
					}

					.left {
						background-color: #FFFFFF;
					}

					// 聊天消息的三角形
					.right::after {
						position: absolute;
						display: inline-block;
						content: '';
						width: 0;
						height: 0;
						left: 100%;
						top: 10px;
						border: 12rpx solid transparent;
						border-left: 12rpx solid $chatContentbgc;
					}

					.left::after {
						position: absolute;
						display: inline-block;
						content: '';
						width: 0;
						height: 0;
						top: 10px;
						right: 100%;
						border: 12rpx solid transparent;
						border-right: 12rpx solid #FFFFFF;
					}

					.content {
						position: relative;
						max-width: 486rpx;
						border-radius: 8rpx;
						word-wrap: break-word;
						padding: 24rpx 24rpx;
						margin: 0 24rpx;
						border-radius: 5px;
						font-size: 32rpx;
						font-family: PingFang SC;
						font-weight: 500;
						color: #333333;
						line-height: 42rpx;
					}

					.avatar {
						display: flex;
						justify-content: center;
						width: 78rpx;
						height: 78rpx;
						border-radius: 50rpx;
						overflow: hidden;

						image {
							align-self: center;
						}

					}
				}
			}
		}

		/* 底部聊天发送栏 */
		.chat-bottom {
			width: 100%;
			height: 100rpx;
			background: #F4F5F7;
			transition: all 0.1s ease;

			.send-msg {
				display: flex;
				align-items: flex-end;
				padding: 16rpx 30rpx;
				width: 100%;
				min-height: 177rpx;
				position: fixed;
				bottom: 0;
				background: #fff;
				transition: all 0.1s ease;
			}

			.uni-textarea {
				padding-bottom: 70rpx;

				textarea {
					width: 537rpx;
					min-height: 75rpx;
					max-height: 500rpx;
					background: #f1f1f1;
					border-radius: 40rpx;
					font-size: 32rpx;
					font-family: PingFang SC;
					color: #333333;
					line-height: 74rpx;
					padding: 5rpx 8rpx;
					text-indent: 30rpx;
				}
			}

			.send-btn {
				display: flex;
				align-items: center;
				justify-content: center;
				margin-bottom: 76rpx;
				margin-left: 25rpx;
				width: 120rpx;
				height: 75rpx;
				background: #ed5a65;
				border-radius: 50rpx;
				font-size: 28rpx;
				font-family: PingFang SC;
				font-weight: 500;
				color: #FFFFFF;
				line-height: 28rpx;
			}
		}
	}

	.a::-webkit-scrollbar {
		display: none;
	}
</style>